The motor below was printed using <ahref='https://www.proto-pasta.com/pages/magnetic-iron-pla'>Proto Pasta's Iron-doped PLA</a>, which has a relative permeability of around 10.
<imgsrc='fusion-design.png'width=400px>
<imgsrc='printed-stepper.jpg'width=400px>
<imgsrc='fusion-design.png'width=300px>
<imgsrc='printed-stepper.jpg'width=300px>
This directory contains STLs and a Fusion design file.